Answer:
1 mole of carbon-12 has 6.02 x 1023 atoms. you need to know how many moles there are in 20 grams of carbon-12. One mole of anything is the same number of grams as the molecular mass, since the molecular mass of carbon-12 is 12, there are 12 grams in 1 mole of it, and therefore 20/12 = 5/3 moles in 20 grams
The stars in the solar system are made of hydrogen and helium
Answer:
The cytoplasm of erythrocytes is rich in hemoglobin, an iron-containing biomolecule that can bind oxygen and is responsible for the red color of the cells and the blood. Each human red blood cell contains approximately 270 million of these hemoglobin molecules.
Answer
The answer and procedures of the exercise are attached in the following archives.
Explanation
You will find the procedures, formulas or necessary explanations in the archive attached below. If you have any question ask and I will aclare your doubts kindly.
<span>The metal also gives off heat in the form of radiation.
Just took the test and got it right, using a process of elimination based on what you know helps. Hope this helps!</span>